Securing means for fastener elements



July 17, 1923.

L. M. FOSS SECURING MEANS FOR FASTENER ELEMENTS Filed Nov. 19, 1921 Patented duly 17,1Q23.

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LAURENCE M. FOSS, OF AMESBURY, MASSACHUSETTS, ASSIGNOB TO G. W. J. MURPHY COMPANY, OF AMESBURY, MASSACHUSETTS. A CORPORATION OF MASSACHUSETTS.

Application filed November 19, 1921. Serial No. 516,456.

arable fasteners which are mounted on a supporting member such as a curtain or the like by parts adapted to be riveted or bent over on the supporting member. The object is more particularly to provide secure device of this kind which may be easily and quickly applied and which will insure a neat piece of work and one which when finished will be of seemly appearance.

As a specific example of my invention 1 have shown an embodiment thereof as applied to the eyelet or grommet of a turn- 7 button fastener and this specific embodiment of my invention will be readily understood by reference to the following description taken in connection with the drawing, wherein:

Fig. 1 is a central vertical section through an eyelet and the cooperating securing means showing the associated turnbutton in elevation;

Fig. 2 Fig.1;

Fig. 8 is part side elevation'part section on areduced scale of a setting tool for setting the parts shown in Figs. 1 and 2;

is a section on the line 2-2 of Fig. 1 is an end viewthereo'fas seen from the right of Fig. 3; and

Fig. 5 is a section on the line 5-5 of Fig. 3.

Referring to the drawing. I show in Fig. 1 a turnbutton 7 which may be of the type shown in my Patent 1,201,682 or October 17, 1916, which is adapted to hold the curtain 9 by cooperation with the elliptical eyelet or grommet 11 carried by the curtainv The outer flange of the eyelet, is pro-- vided with a series of prongs 13 adapted to pass through the curtain and be upset on the rear side thereof. The eyelet with these prongs as here disclosed constitutes a fastener element which is an example of 1 t is secured to a supporting member, such,

curtain 9, by means of a part adapted to extend through such a member and be bent down or riveted over thereon. It will be understood that while one particular form of such an element is herein shown by way of illustration the invention is applicable to devices of different type.

1 here show the prongs 13 as upset over a washer 15 (see Fig. 2) which may be of comparatively strong and durable metal such as steel and the washer may be of undulated form and embody portions 17 adapted to lie against the back of the curtain and .over which the prongs 13 are bent and relatively offset portions 19 alternating with the portions 17. To provide a neat finish I u ilize a dished cover plate 21 which is preterably of more seemly metal than the washer. For example, it may be made of thin brass. This cover plate overlies the back and outer margin of the washer, covers the same and provides a smooth finish for the completed job at the rear of the curtain. The cover plate 21 is secured to the washer 15 and I have herein shown tabs 23 around the inner periphery of the cover plate clenched on the offset portions 19 of the washer which lie against the inner surface oi the cover plate.

It will be understood that the prongs 13. when the parts are being assembled. extend out substantially perpendicular to the front face of the evelet 11. The cover plate 21 is preferably formed to present to the prongs oi? the eyelet 11 surfaces adapted to upset the prongs and bend them over on the washer 15. be backed up by a suitable tool during the setting: operation. .t will be noted that the portions 1? oi the washer 15 define with the cover plate pockets (see Fig. 1) into which the prongs are adapted to be clenched. they being; bent over therein by the action of the inner surtace oi the plate 21 opposing, them.

To provide -q'reater security in the fasteninn. parts of the portions 17 ot the washer adiacent where the prongs enter are bent rearwardlv at a slope or bevel so that the margins lie adiacent the upsetting surfaces oi the cover plate 21. The prone is thus clenched closely over the edge of the washer and the evelet securely held even it the end. of the rone" is not reverselv bent into contact with the portions 17 which lie against the rear face of the curtain and in most in- The cover plate for this purpose may IOU stances a two point support is provided for the upset prong. The rearward bending of the parts 25 provides a flaring mOuth 27 between the washer and the adjacent casing 21 which facilitates the introduction 01' the prongs thereto, contributes to a proper alignment of the eyelet and the securing device and guides the prongs accurately towards the upsetting surfaces of the back plate 21.

In Figs. 3, 4 and 5 I have illustrated a suitable tool for setting the eyelet as dis closed in Figsrl and 2. The tool may co1nprise a stock 31 on which is mounted the clenching portion 33 havingthe annular recess '35 adapted to receive thebacking plate 21 and to fit and support the same during the clenching operation so that the backing plate although of thin metal will be eii'ective to upset the prongs 13. In the tool shownl also provide the centrally mounted pilot 37 adapted to extend through and fit the opening in the backing plate 21 and the washer 15 through which the base of the turnbutton 7 extends in the manner shown in Fig. 1. This pilot member is supported in the stock by the spring 39 to permit the same to yield inwardly so that the clenching may be effected.

I herein provide means for retaining the securing member temporarily on the pilot to hold it in place against the surface 35,

thus facilitating the operation of assembling it with the eyelet 11. I have herein shown aspring wire 4-.0 secured across the end of the pilot and'having curved arms 41 'PIOJGCEITJg from the sides of the pilot in axial planes and forming spring catches. Referring to Fig. 3, it will be seen that the annular securing device may he slipped over the end of the pilot and, following the curve of the arms 41, will pass over the high points thereof which will snap out be neath it and the spring arms will hold the securing device against the surface 35. Then when the pilot is inserted in the central opening of the eyelet 11 the securing device will be automatically aligned with the eyelet. The pilot is preferably cut away at 43 to provide an open space into which the free ends of the spring arms 41 extend and the inner periphery of the annular surface 35 will, as the pilot is pressed inwardly in work without any resistance from the springs 4C1 which are thus automatically disengaged from the securing member as an incident to the clenching operation.

Having thus described in detail the particular embodiment of my invention shown by way of example in the accompanying drawing, what I claim new and desire to secure by Letters Patent 1 shall express in the following claims: 1

1. A securing means for cooperation with a fastener element which has a plurality of prongs to extend through a supporting member comprising an undulated washer providing relatively depressed and raised portions and a cover plate se-curedto said raised portions and defining with said depressed portions prong receiving pockets and presenting an upsetting surface to clench the prongs into said pockets.

2. A. securing means as defined in claim 1 wherein the margins of said depressed portions are rearwardly bent.

3. A securing means for cooperation with a fastener element which has a plurality of prongs to extend through a supporting member comprising a washer, a cover plate closely fitting the margin of said washer but defining therewith a peripheral series of prong receiving openings, said plate presenting an upsetting surface to clench prongs projected through said. openings over the washer.

i. A securing means for cooperation with a fastener element which has aplurality of prongs to extend througha supporting member comprising a washer. a cover plate closely fitting the margin of said'washer but defining therewith a peripheral series of prong receiving openingsrthe margins of the washer at said openings being rearwardly bent, said plate presenting an upsetting surface to elench prongs projected through said openings over the washer.

lfn testimony whereotlhave signed my name to this specification.

sanitat on M. rose. 

